Child Safety Seat Ease of Use Ratings


Are All Seats Safe?
All car seats rated by NHTSA meet Federal Safety Standards & strict crash performance standards. While all rated seats are safe, they do differ in their ease of use in four basic catagories:


Evaluation of Instructions

Vehicle Installation Features

Evaluation of Labels

Securing the Child


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Diono RadianR100 (FF)



Manufacturer  /  Model NameDiono RadianR100
Model Number  /  Manufacture Date16600  /  Oct 1, 2011
Harness Type5-pt
Weight  /  Height20lb - 65lb / up to 57"
Evaluation of Labels 1 stars
There is not a picture of a child properly restrained in the CRS on the labeling.  No additional sizing information is given on the labels.  The tether is not labeled in the illustrations depicting acceptable modes of installation.  No indication of correct harness height is given on the labels. Labels do not explain the use of LATCH. Labels do not illustrate how to remove and prepare LATCH attachments for use. The labels do not remind the caregiver to tighten LATCH. Labels do not show how to remove the tether or prepare it for use. No instructions are given on the labels for the use of the tether.
Evaluation of Instructions 2 stars
The instruction manual storage may be difficult to find.  No full picture exists of a properly restrained child in the restraint in the owner's manual.  The tether is not labeled in the illustrations depicting acceptable modes of installation.  The warning that the safest place for children is the rear seat is contained in a bulleted list and is not separated from other warnings. The warning that indicates that the rear seat is the safest place for children is not illustrated clearly in the owner's manual. The section describing vehicle seat belt types is incomplete and may be missing important information. The user may need to read text in order to use the tether properly. The LATCH attachments and tether arrive stored, and the owner's manual does not describe how to remove them from storage prior to first use.
Securing the Child 3 stars
Harness slots in the pad and in the shell are misaligned or small.  The harness must be rethreaded to adjust height for the child's growth.  There are no pictures on the labels to describe how to convert this restraint to this mode of use.  Multiple actions are required to convert the seat to this mode of use; these must be followed in the manual. The harness may need to be completely reinstalled into the restraint to convert to this mode of use from another mode. The LATCH belt must be rerouted to convert the restraint to this mode of use from another mode. The harness must be taken out and rethreaded when cleaning the restraint. When disassembled for cleaning, mandatory parts of the restraint become detached and could be misplaced.
Installation Features 4 stars
The belt path may not comfortably accommodate a larger hand.  LATCH attachments have buttons to depress for removal.
Overall Ease of Use Rating 2 stars

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